Source: http://www.abarim-publications.com/Meaning/Raham.html

🔼The name Raham in the Bible

The name Raham occurs only once in the Bible. He is a son of Shema, son of Hebron, son of Caleb of Judah (1 Chronicles 2:44). Raham's son is named Jorkeam, although it seems more preferable to understand that Jorkeam was a city founded by Raham.

🔼Etymology of the name Raham

The name Raham comes from the verb רחם (raham) meaning to love or have mercy:

🔼Raham meaning

For a meaning of the name Raham, NOBSE Study Bible Name List reads Pity. Jones' Dictionary of Old Testament Proper Names has Merciful. BDB Theological Dictionary proposes Compassion, but adds: or Softness, Gentleness?